Quick Answer: What Is Class A IP Address?

What is class A IP range?

The IP range 127.

x.x.x is reserved for loopback IP addresses.

The default subnet mask for Class A IP address is 255.0.

0.0 which implies that Class A addressing can have 126 networks (27-2) and 16777214 hosts (224-2).

Class A IP address format is thus: 0NNNNNNN.HHHHHHHH.HHHHHHHH.HHHHHHHH..

What is an example of a Class A address?

If the value of first octet is in range 1 to 127, it’s a class A IP address. Examples of class A IP address are: – 1.2.3. 4, 10. 20.30.

How many IP addresses are there in a Class A network?

Classful addressing definitionClassLeading bitsNumber of networksClass A0128 (27)Class B1016,384 (214)Class C1102,097,152 (221)Class D (multicast)1110not defined1 more row

How many hosts can a Class A network have?

Table 2-1 IP Addresses Available to Internet HostsAddress ClassFirst Octet RangeNumber of Hosts Per NetworkClass A0 to 12616,777,214Class B128 to 19165,534Class C192 to 223254Aug 27, 2004

What does 24 mean in IP address?

The number after the slash represents the number of consecutive 1’s in the subnet mask. For example, 192.168.10.0/24 is equal to the network 192.168.10.0 with a 255.255.255.0 subnet mask. If you convert 255.255.255.0 to binary, you end up with 24 consecutive 1 ‘s: 11111111.11111111.11111111.00000000.

How do I know if my IP address is public or private?

On the Dashboard home page in the Internet info panel, click ‘Connection Details’. In the ‘IP address’ field, you will see the address which is used to access the Internet. Here, the numbers are the same and it is actually a public address used on the WAN of the router.

What are the 2 types of IP address?

There are two types of IP addresses – public and private. Public IPs are used by routers and by computers connected directly to DSL modems without a router. Private IP addresses are special IP addresses that are known only to a router and its home network.

How many subnets are in Class A?

0.0. The two bits added to the network part from the host part can have four possible values in second octet of a Class A network , 00, 01, 10, and 11. That means, we can get four networks if we do a 2-bit subnetting on a Class A network. Ths subnet mask to use for Class A network 2-bit subnetting is 255.192.

Which of the following is the best definition of IP spoofing?

IP spoofing is the creation of Internet Protocol (IP) packets which have a modified source address in order to either hide the identity of the sender, to impersonate another computer system, or both.

How many IP addresses are there?

4.3 billion IPv4In fact, there are today about 4.3 billion IPv4-type IP addresses throughout the entire world.

What is a Class A address?

If the address is written in decimal format, the first number determines the address. If the first number is between 0 and 127 inclusive, the address is class A. If the first number is between 128 and 191 inclusive, the address is class B. If the first number is between 192 and 223 inclusive, the address is class C.

What are Class A networks?

Class A. Class A addresses are IP addresses that are assigned to network devices, such as computers, and include all addresses in which the first bit of the first octet is set to 0 (zero). … For Class A networks, the first octet represents a network ID that is defined in the address by a subnet mask.

What exactly is a subnet?

A subnetwork or subnet is a logical subdivision of an IP network. … This results in the logical division of an IP address into two fields: the network number or routing prefix and the rest field or host identifier. The rest field is an identifier for a specific host or network interface.

How many 20 subnets are in a 16?

Network BitsSubnet MaskNumber of Subnets/17255.255.128.02 (0)/18255.255.192.04 (2)/19255.255.224.08 (6)/20255.255.240.016 (14)11 more rows•Aug 16, 2003

How do you calculate the number of networks in a Class A?

The total number of networks a class address may have is calculated by subtracting the number of bits in the subnet mask from the number of bits used to determine which class of network it is. For example, a class A network has an 8-bit subnet mask.

How do you calculate class A IP address?

How to identify the IP class from a given IP address?If it begins with 0, then it’s a Class A network.If it begins with 10, then it’s a Class B network.If it begins with 110, then it’s a Class C network.If it begins with 1110, then it’s a Class D network.If it begins with 1111, then it’s a Class E network.

What is a Class A subnet?

Class A networks use a default subnet mask of 255.0. 0.0 and have 0-127 as their first octet. The address 10.52. 36.11 is a class A address. Its first octet is 10, which is between 1 and 126, inclusive.

Who uses Class A IP addresses?

Class A IP addresses are used for huge networks, like those deployed by Internet Service Providers (ISPs). Class A IP addresses support up to 16 million hosts (hosts are devices that connect to a network (computers, servers, switches, routers, printers…etc.)

How do you know what class a network is?

Only 1-126 can be used to identify Class A networks because 0 and 127 are reserved. To find the valid host addresses in a Class A network, you must find the network and broadcast address in the IP range. Since the Class A address only uses the first byte to identify the network, the last three octets are host bits.

What is a 192.168 IP address?

192.168. 1.1 is a common factory IP address for a consumer-grade router. If the router is used for connecting to the Internet then all computers and devices which access the Internet through it will use this address as their default gateway.